Conventions

Following are examples of the typographical and graphic conventions used
in this guide:

Functions, utility program names, standard names,
and classes.

Option flags

File Names, button names, and field names.

Variables.

Emphasis.

[optional information or parameters]

Examples are described by text

and then shown this way.

Commands that are entered by the user are preceded in this manual by the
characters "$ " (dollar sign followed by space). If your system uses this
sequence as a prompt, then the commands will appear exactly as you see them
in the manual. If your system uses some other prompt, then the command will
appear with the $ replaced by whatever prompt character you are using.